Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help

Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > ML, GL, G-Wagen, R-Class, Unimog, Sprinter

LinkBack Thread Tools Display Modes
Old 11-09-2014, 02:59 PM
Registered User
Join Date: Jun 2008
Posts: 46
Need new AC Compressor?

Added 3 cans of freon year before last; last year needed 4 cans and system was once so empty clutch would not engage. Got 250,000 miles on this '99 ML320. Figure the seal in the compressor is leaking and the entire unit needs replacement with Chrysler/Chinese/Japanese EBay purchase. Meanwhile, I'll follow the old advice to operate it at least weekly during the cold season to keep the seal wet with oil.
What are the odds the leak is somewhere other than the compressor?

Last edited by Arminius; 11-09-2014 at 07:26 PM.
Reply With Quote
Old 12-20-2014, 07:28 PM
Registered User
Join Date: Jun 2008
Posts: 46
UV light for leaks

To diagnose a leak, buy freon containing UV detector dye and scan with a UV light. The cans are about $20.
This is probably unneeded in my case as the bottom of my compressor is pretty wet with oil. I assume it is refrigerant oil accumulating as my freon escapes and sunburns the polar bears. Not really, we just call it freon. It's really inefficient but environmentally correct R@#& which required MB to install those huge electric fans in front of your radiator in addition to your belt driven fan.
Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -4. The time now is 07:43 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page